Quick Clamping Device

ABSTRACT

This invention relates to a type of quick clamping device, including a semi-circular base and a screw penetrating bottom part of said base. One end of said screw extends out of said base and is connected to an eccentric wheel via a conical shaft pin. Said eccentric wheel is provided with a handle. On said screw, a fixture block and a wedged sliding block are installed, with said wedged sliding block adjacent to said eccentric wheel and said fixture block adjacent to said wedged sliding block. Top part of one end of said base is connected to a buckle via two connecting blocks and top part of the other end of said base is connected to a top cover. A protruding block is provided on top of said top cover. Free end of said buckle is provided with a groove that matches said protruding block. All connections between top part of one end of said base and each said connecting block, between each said connecting block and said buckle, and between top part of the other end of said base and said top cover adopt movable connection using quick removal pin. Two springs are provided on upper surface of top part of one end of said base. This invention features compact structure and easy operation.

FIELD OF THE INVENTION

This invention relates to a type of quick clamping device, used to clamp accessories such as aiming device, electric torch, and laser device etc.

BACKGROUND OF THE INVENTION

At present, all supports available on the market used to fix accessories such as aiming device, laser device, and electric torch etc. consist of an upper part and a lower part, or an integral part, and adopt threads for fixing and locking, which require use of a spanner. As tools such as a spanner are not easy to carry and may be lost, inconvenience for clamping is possible.

SUMMARY OF THE INVENTION

The purpose of this invention is to overcome such shortcoming of traditional clamping devices and provide a type of quick clamping device of compact structure allowing easy operation, without use of any additional tool.

This invention is implemented using the following technical scheme:

A type of quick clamping device, including a semi-circular base and a screw penetrating bottom part of said base; one end of said screw extends out of said base and is connected to an eccentric wheel via a conical shaft pin; said eccentric wheel is provided with a handle; on said screw, a fixture block and a wedged sliding block are installed, with said wedged sliding block adjacent to said eccentric wheel and said fixture block adjacent to said wedged sliding block; top part of one end of said base is connected to a buckle via two connecting blocks and top part of the other end of said base is connected to a top cover; a protruding block is provided on top of said top cover; and free end of said buckle is provided with a groove that matches said protruding block.

A further improvement by this invention is that all connections between top part of one end of said base and each said connecting block, between each said connecting block and said buckle, and between top part of the other end of said base and said top cover adopt movable connection using quick removal pin.

Another further improvement of this invention is that two springs are provided on upper surface of top part of one end of said base.

Compared with prior art, this invention has the following advantages: In the device of this invention, the top cover directly clamps the object (accessory such as aiming device, electric torch, and laser device etc.) without the need to use other tool. When this device is not used, the top cover can be directly buckled, and will not go loose, facilitating carrying.

DESCRIPTION OF DRAWING FIGURES

FIG. 1 is a structural schematic of the device of this invention at closed position.

FIG. 2 is a structural schematic of the device of this invention at open position.

Item numbers in these figures: 1-buckle; 2-top cover; 3-eccentric wheel; 4-conical shaft pin; 5-wedged sliding block; 6-fixture block; 7-screw; 8-base; 9-spring; 10-connecting block; 11-quick removal pin; 12-protruding block; 13-groove; 14-handle.

Preferred Embodiment

To deepen understanding of this invention, the following provides a detailed description in combination with attached figures and a preferred embodiment. This preferred embodiment is only meant to explain this invention, not to limit protected scope of this invention.

In FIG. 1 and FIG. 2, a preferred embodiment of the quick clamping device of this invention is shown, including a semi-circular base 8 and a screw 7 penetrating bottom part of said base 8. One end of said screw 7 extends out of said base 8 and is connected to an eccentric wheel 3 via a conical shaft pin 4. Said eccentric wheel 3 is provided with a handle 14. On said screw 7, a fixture block 6 and a wedged sliding block 5 are installed, with said wedged sliding block 5 adjacent to said eccentric wheel 3 and said fixture block 6 adjacent to said wedged sliding block 5. Top part of said one end of said base 8 is connected to a buckle 1 via two connecting blocks 10 and top part of the other end of said base 8 is connected to a top cover 2. A protruding block 12 is provided on top of said top cover 2, and free end of said buckle 1 is provided with a groove 13 that matches said protruding block 12. All connections between top part of one end of said base 8 and each said connecting block 10, between each said connecting block 10 and said buckle 1, and between top part of the other end of said base 8 and said top cover 2 adopt movable connection using quick removal pin 11. One end of the buckle is a free end, while the other end is connected to connecting blocks via quick removal pins. Buckle connection end adopts an eccentric wheel structure. Connecting blocks are connected to the base via quick removal pins. The top cover is connected to the base via a quick removal pin. One end of the screw has an elliptical platform, snapped onto the base via the snap groove in the base, so that it cannot rotate.

The other end of the screw is connected to the eccentric wheel via a conical shaft pin. Between the eccentric wheel and the base, a wedged sliding block and a fixture block are provided. At the end of the base connecting the connecting blocks, two springs 9 are provided, in particular, two springs 9 on upper surface of top part of one end of the base 8. When the device of this invention is not used to clamp an accessory such as an aiming device, these springs will support the free end of the top cover and further withstand the connection end of the buckle, so that the top cover will not get loose and fall, facilitating carrying.

If the eccentric wheel is installed at left side of this device, the end of this wheel with smaller eccentricity will be placed adjacent to the wedged sliding block. At this time, the handle is away from the user. Then, the whole device is snapped onto the guide rail via the fixture block at lower part of the base and the screw is snapped onto the guide rail groove. Turn the eccentric wheel. Due to eccentricity, the eccentric wheel will gradually press tightly against the wedged sliding block and the fixture block till fully tightened. Due to error in width of guide rail, clamping tightness is adjusted through forward-backward position of the wedged sliding block. If the eccentric wheel is installed at right side of this device, the end of the eccentric wheel with smaller eccentricity will be placed adjacent to the wedged sliding block. Push the eccentric wheel so that the elliptical end at the other end of the screw is disengaged from the snap groove in the base. Turn the eccentric wheel by 180 degrees so that the screw is driven by the eccentric wheel to turn by 180 degrees. Do not rotate the wedged sliding block or the fixture block. Loosen the eccentric wheel so that the screw is snapped in the snap groove in the base. The lower part of the base is fixed on the guide rail via the fixture block. Loosen the eccentric wheel; at this time, the fixture block is loose and the base can be freely installed on the guide rail, in loose state. Use the handle to turn the eccentric wheel so that the fixture block is gradually clamped tight on the guide rail, in tight state. Since the guide rail width varies, position of the oblique wedge can be adjusted forward-backward to achieve a suitable position, to press the eccentric wheel tight, so that the base is fixed on the guide rail. This invention is applicable to wide guide rails of different dimensions, without use of any tool, namely to both very wide and very narrow guide rails.

To clamp an aiming device or another accessory using the clamping device of this invention, first loosen the buckle and open the top cover. Place the aiming device or other accessory on the base and close the top cover to clamp it. Horizontally push the buckle and connecting block connection end onto the free end of the top cover, and press the buckle down so that the groove in buckle free end is fully engaged with the protruding block on top cover top part. In the device of this invention, the top cover directly clamps the accessory (aiming device, electric torch, or laser device etc.), without the need of use of any other tool. When this clamping device is not used, the top cover can be directly closed, hence will not go loose and fall, facilitating carrying. 

1. A type of quick clamping device, including a semi-circular base (8) and a screw (7) penetrating bottom part of said base (8); one end of said screw (7) extends out of said base (8) and is connected to an eccentric wheel (3) via a conical shaft pin (4); said eccentric wheel (3) is provided with a handle (14); on said screw (7), a fixture block (6) and a wedged sliding block (5) are mounted, with said wedged sliding block (5) adjacent to said eccentric wheel (3) and said fixture block (6) adjacent to said wedged sliding block (5); which is characterized in that top part of said one end of said base (8) is connected to a buckle (1) via two connecting blocks (10) and top part of the other end of said base (8) is connected to a top cover (2); a protruding block (12) is provided on top of said top cover (2), and free end of said buckle (1) is provided with a groove (13) that matches said protruding block (12);
 2. The quick clamping device of claim 1, which is characterized in that all connections between top part of one end of said base (8) and each said connecting block (10), between each said connecting block (10) and said buckle (1), and between top part of the other end of said base (8) and said top cover (2) adopt movable connection using quick removal pin (11); and
 3. The quick clamping device of claim 1, which is characterized in that two springs (9) are provided on upper surface of top part of one end of said base (8). 